A Google Chrome extension for quick graphing of selected text. GraphThat is available on the Chrome Web Store.See the source code on GitHub. GraphThat allows the user to generate graphs from numerical data found on the web quickly and easily. Simply select the text and… Read More »GraphThat, an Extension for Google Chrome
See the source code on GitHub. TECS Jack Compiler is a compiler for the simple object-based language Jack written in Python. The machine code produced is designed to run on the HACK hardware platform. The code is compiled in three stages. First the CompilationEngine module… Read More »TECS Jack Compiler
The CM91 died and will not start at all. On close inspection it sounded like there was a compression leak through the intake valve. I could hear hissing through the carburetor on both intake and compression strokes. Not good! The top end came apart once… Read More »Time For a New Top End
The old throttle cable was just a bit too short, and on the CM91 the only adjustment is at the carb top. It only provides about an 1/8 inch of difference. Little to no slack could be had in the cable and I suspect that… Read More »Making a Custom Throttle Cable
I’ve read that contrary to most modern bikes, on these small Hondas the rear brake provides most of the stopping power. My bike’s rear brake is hard as a rock and does little to slow the bike. The rear drum was worn to a glossy… Read More »No More Flintstones Brakes
Old dried out rubber has resulted in quite a bit of oil leaking from the engine. I replaced the valve cap seals, camshaft oil seal (behind the points), copper washers on the cam cover screws. This has taken care of the majority of the leaks… Read More »Tidying Up Oil Leaks
The CM91 was still not idling properly. I replaced the points and condenser, and also tore into the carb again. I’ve reset the float height, but on close inspection the needle and needle jet appeared to be worn. I found NOS parts on eBay to… Read More »New Points and Needle Jet
The semi-automatic clutch was not disengaging during shifts. Upon disassembly, I discovered that the posts were frozen to the basket. The clutch was still able to disengage at idle since there are different mechanisms used. These semi-automatic clutches pack an impressive amount of engineering into… Read More »CM91 Clutch Rebuild
The rubber that holds the mirrors in place has long since rotted. I scraped out the remains and cleaned up the housing. Using black silicone gasket maker, I cemented the mirror glass back into the housings. I also attached this cute basket which shipped from… Read More »A New Basket and Mirror Refurbishing
When replacing the fork, I discovered that the headlight housing was broken at the top. Most of the force that holds the headlight in rests on this small lip, so I needed to make a solid repair. After cleaning and roughening the surfaces, I used… Read More »Headlight Housing Repair